I just bought the TL on saturday, first acura and its great. Except for the fact that my sound system sounds terrible, theres no bass whatsoever even with it fully turnt up. It has an aftermarket amp, 800W, but I have a feeling the speakers and/or stock sub might be blown. What else could the cause be?

 

The previous owner may of had a sub setup in the rear and removed and/or diconnected the stock sub. Is that 800 watt amp hooked up to the interior speakers, if not then they def had a aftermarket sub in the trunk. take the trunk liner down and see if you see a speaker in the center. If you do then check to see if it connected. If there is no speaker then looks like you will have to get an aftermarket or replace the stock one.